The feasibility of which short-hole shrinkage method is used for mining of low-grade and submarginal ores in Huanren Mine is demonstrated in this paper.
论证了采用浅孔留
法对桓仁
区的低品位
表外进行综
的可行性。
益标准以下的The feasibility of which short-hole shrinkage method is used for mining of low-grade and submarginal ores in Huanren Mine is demonstrated in this paper.
论证了采用浅孔留法对桓仁区的低品位表外进行综的可行性。
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